Convert tabs to spaces in .less files

[silverwind]

Out of the 3469 lines of code in the .less files, 2004 were indented with spaces while 1465 were indented with tabs. I converted all tab indendation to 4 spaces as specified in .editorconfig using this command:

find . ! -type d -exec bash -c 'expand -t 4 "$0" > /tmp/e && mv /tmp/e "$0"' {} \; 

If we want to use tabs in these files, I'd be open to that too, but it should be consistent and in .editorconfig.

[codecov-io]

Codecov Report

Merging #3064 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@ Coverage Diff @@ ## master #3064 +/- ## ========================================== + Coverage 33.43% 33.44% +<.01%  ========================================== Files 270 270 Lines 39553 39553 ========================================== + Hits 13226 13229 +3  + Misses 24441 24439 -2  + Partials 1886 1885 -1

Impacted Files	Coverage Δ
modules/avatar/avatar.go	100% <0%> (+18.75%)	⬆️

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[lafriks]

Need to resolve conflicts

[lafriks]

But otherwise LGTM

[ethantkoenig]

LGTM

[silverwind]

Rebased.